Biyodizel ve Karýþýmlarýnýn Kullanýldýðý bir Dizel Motorda Performans ve Emisyon Analizi

Bu çalýþmada, atýk palmiye yaðý kökenli biyodizel ve petrol kökenli dizel yakýtý (PKDY) ile karýþýmlarýnýn, bir dizel motordaki performans ve emisyon karakteristikleri üç boyutlu haritalar üzerinden analiz edilmiþtir. Biyodizel ve karýþýmlarýnýn performans ve emisyon karakterlerini belirlemek amacýyla, motor tam yük ve deðiþik devir testlerine tabi tutulmuþtur. Analiz sonucunda, karýþýmdaki biyodizel oraný arttýkça PKDY’a göre özgül yakýt tüketiminde artýþ olduðu, motorun döndürme momentinde ise azalma meydana geldiði tespit edilmiþtir. Emisyon analizi sonucunda ise, karýþýmdaki biyodizel oraný ile iliþkili olarak PKDY’a kýyasla yanmamýþ hidrokarbon (HC), karbon monoksit (CO) ve duman koyuluðu emisyonlarýnda iyileþmeler olduðu, bununla birlikte karbon dioksit (CO2) ve azot oksit (NOx) emisyonlarýnýn motor devrine göre kararlý bir yapý sergilemediði belirlenmiþtir.

Analysis of Performance and Emmissions in a Diesel Engine Fueled with Biodiesel and Blends

In this study, the performance and emission characteristics of biodiesel based waste palm oil and its blends with petroleum based diesel fuel (PBDF) was analyzed by means of three dimensional maps. In order to determine the engine performance and exhaust emission characteristics, the engine was exposed with full load and varied speed tests. In the result of analyze, it was seen that the brake specific fuel consumptions increased with the increase of biodiesel percentage in the fuel blend, but brake torque decreased depending upon biodiesel percentage in the fuel. In the result of emission analyze, it has determined that biodiesel and its blends has provided significant improvements in HC, CO and smoke opacity emissions. However, the stable behaviors in NOx and CO2 emissions of biodiesel and its blends did not seen in terms of the engine speed.